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The ASA scale is a linear scale, that is, a film denoted as having a film speed of 200 ASA is twice as fast as a film with 100 ASA. The ASA standard underwent a major revision in 1960 with ASA PH2.5-1960, when the method to determine film speed was refined and previously applied safety factors against under-exposure were abandoned, effectively ...
The sensitivity of a (digital or film) imaging system is typically described in the terms of the signal level that yields a threshold level of SNR. Industry standards define sensitivity in terms of the ISO film speed equivalent, using SNR thresholds (at average scene luminance) of 40:1 for "excellent" image quality and 10:1 for "acceptable ...
The implied value (1/3.125) for the speed scaling constant given in the Exif 2.2 specification ("Exif 2.2"; JEITA 2002) differs slightly from the APEX value of / (0.2973); with the Exif value, an ISO arithmetic film speed of 100 corresponds exactly to a speed value [3] of 5.
Darren Jason Watkins Jr. (born January 21, 2005), known online as IShowSpeed or Speed, is an American YouTuber and online streamer. He is known for his variety live streams that showcase dramatic and energetic behavior, as well as his IRL streams in worldwide locations.
Stirr ultimately carried around 100 channels at its peak. [10] Stirr City was the service's primary streaming channel, which pulls content based on the location/station selected. When network programming ran on the local OTA channel, Stirr City would air alternate programming drawn from the other Stirr channels.
This is an accepted version of this page This is the latest accepted revision, reviewed on 9 February 2025. This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. Indian record label T-Series is the most-viewed YouTube channel, with over 283 billion views. The list of most-viewed YouTube ...
The domain speedtest.net has been used to host a speed test since 2000, and was acquired by Ookla in 2006. [12] As of 2011, Ookla claimed 80% market share and was one of the top 1000 most popular websites. At the time, Ookla derived its revenue primarily from fees paid by companies to license custom speed test and proprietary testing software.
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